Ram 2500 Battery Guide
Battery Specs and Service Guide for Your Ram 2500
Proudly serving Brevard, Asheville, Hendersonville, Fletcher & Cherokee NC
Ram 2500 Battery Specifications
Ram 2500 trucks use dual batteries to support the heavy electrical demands of HD truck operation — especially Cummins diesel models which require dual batteries for cold-cranking. Our service team handles dual-battery diagnostics.
| Configuration | Battery Group | CCA | Notes |
|---|---|---|---|
| Ram 2500 HEMI V8 (Gas) | Dual Group 94R AGM | 850 CCA each | Dual battery setup supports HD electrical loads |
| Ram 2500 Cummins Turbo Diesel | Dual Group 65 AGM (HD) | 950 CCA each | Heavy-duty dual batteries required for cold-cranking the Cummins |
Battery Specifications by Configuration
Ram 2500 HEMI V8 (Gas)
Battery Group: Dual Group 94R AGM
Cold Cranking Amps: 850 CCA each
Notes: Dual battery setup supports HD electrical loads
Dual battery setup supports HD electrical loads
Ram 2500 Cummins Turbo Diesel
Battery Group: Dual Group 65 AGM (HD)
Cold Cranking Amps: 950 CCA each
Notes: Heavy-duty dual batteries required for cold-cranking the Cummins
Heavy-duty dual batteries required for cold-cranking the Cummins
Battery Care Tips for Your Ram 2500
- Cummins owners: both batteries must be replaced together, even if only one tests bad.
- Cold-cranking the Cummins requires the dual-battery system to be in good health — load-test both annually.
- Inspect terminals seasonally — heavy-duty trucks see harsh environments.
- Stop-start systems require AGM batteries — never substitute flooded.
- Expected lifespan for HD AGM batteries is 4-6 years.
What's Included in Every Battery at Mahon CDJR
Every battery service at Mahon CDJR starts with a free Mopar battery test that measures voltage, cold cranking amps, and internal resistance. If replacement is needed we use the OEM-spec Mopar battery matched to your Ram 2500 — including AGM batteries for vehicles with auto start-stop or eTorque. We also test your alternator and starter while we're at it.
Note on Pricing: Battery price depends on group size, CCA rating, and whether your Ram 2500 requires an AGM (Absorbent Glass Mat) battery for start-stop or eTorque systems. PHEV models have additional high-voltage battery systems covered by separate warranties. Call (828) 492-2121 for current battery pricing.
Mahon CDJR — proudly serving Brevard, Asheville, Hendersonville, Fletcher & Cherokee NC.
Created July 22, 2026 by MM Dealer Advocates